tweets of personal statements infinitely -- instantly reinforce mandela as a hope. >> nelson mandela was a giant for justin -- justice. many around the world were greatly influenced by his selfless struggle for human committee, equality, and freedom. >> in the u.s., the white house flag is at half staff today. president obama made a statement from the white house last night. classes journey from to a president embodied the promise that human beings and countries can change for the better. his commitment to transfer power and reconcile with those who jailed him is an example all humanity should aspire to, whether in the lives of nations or our own personal lives. the fact that he did it all with and thed good humor ability to it knowledge his own imperfections, only makes the man that much more remarkable. said, "i am not a saint, unless you think of a saint as a sinner who keeps on trying. " >> that gets to the heart of his humility. he did so much good but he struggled with his own short humming. bono and morgan freeman knew all about that. >> he does not feel like a big success we